620900 has 36 divisors (see below), whose sum is σ = 1541568. Its totient is φ = 212640.

The previous prime is 620887. The next prime is 620909. The reversal of 620900 is 9026.

620900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (620909) by changing a digit.

620900 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257 + ... + 1143.

2⁶²⁰⁹⁰⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770784).

620900 is an abundant number, since it is smaller than the sum of its proper divisors (920668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620900 is a wasteful number, since it uses less digits than its factorization.

620900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 901 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 620900 is about 787.9720807237. The cubic root of 620900 is about 85.3114296538.

Adding to 620900 its reverse (9026), we get a palindrome (629926).

The spelling of 620900 in words is "six hundred twenty thousand, nine hundred".